Question # 1

Most land mammals respond to cold by raising their.

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skin

Furs

Bristles

Spines

The actual location of place, where an organism lives is called its.

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Niche

environment

Habitat

Ecosystem

Mendellan factors were renamed as 'genes' by

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Mendel

Correns

Morgan

Johannsen

The distinct levels of food chain are called.

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Food chain

Food Web

Trophic level

Energy pyramid

A hurdened outer surface to which internal muscles can be attached is

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Endoskeleton

Hydrostatic skeleton

Exoskeleton

Axial skeleton

How many base pairs are found in the human gamine.

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Three billion

thirty billion

Five billion

Forty billion

About 500 ml water is needed to excrete 1g of ammonia

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Hydrogen

Oxygen

Nitrogen

Helium

An ordered sequence of irrversible steps with each step setting up the necessary conditions for the next step is

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Embryology

Growth

Development

None of these

Which of the following hormones is not released by the anterior pituitary?

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Melanocyte - releasing hormone

Gonadotropin-releasing harmone

Thyroid- stimulating hormone

Growth hormone

For maximum growth the optimum temperature is 25 - 30^oC and it least at

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1 - 3^oC

5 - 10^oC

4 - 8^oC

6 - 12^oC

The condensation of chromosomes reaches to its maximum during.

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Pachytene

Zygotene

Leptotene

Diakinesis

Tissue culture and cloning seek help through.

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Mitosis

Meiosis

endomitosis

Karyokinesis

Rickets is due to deficiency of vitamin.

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A

C

D

E

Hatching period of chick is.

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15 days

18 days

21 days

28 days

In grassland ecosystem annual rainfall is about 250 to

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350 mm

450 mm

650 mm

750 mm

Which one of the following pairs represents analogous features?

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Elephant tusks & Human incisors

Insects wings & bat wings

Mammal fore limb & bird wing

Reptilian heart & mammalism heart

Water used for industrial purposes is about

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9%

90%

70%

50%

Which one of the following is not an unpaired bone.

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Mandible

Vomer

Nasal

Sphenoid

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